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參數(shù)資料
| 型號： | SMM665BFR9 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | Six-Channel Active DC Output Controller, Monitor, Marginer and Sequencer |
| 中文描述： | 六通道有源直流輸出控制器，監(jiān)視器，Marginer和音序器 |
| 文件頁數(shù)： | 20/30頁 |
| 文件大?。?/td> | 872K |
| 代理商： | SMM665BFR9 |
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SMM665B
Preliminary Information
Summit Microelectronics, Inc
2089 1.1 10/20/04
20
TRIM
A
VM
A
+
TRIM
B
VM
B
+
SMM665B
IR
iP1202
VSW1
SDA
SCL
I2C BUS
V
12V
12V
CS
V
FB1
VOUT1
1.5V
FB1S
Rtrim
1.6K
VSW2
FB2
VOUT2
2.5V
FB2S
Rtrim
3.3K
Not all components Shown
For interface purposes only
Part designators are from
the International Rectifier
iP1202 Demo board .
SS2
PUP
A
SS1
PUP
B
R9
R7
C8
C7
R10
R8
Figure 12 – The SMM665B can be used to sequence and control discrete DC switching regulators. The ADOC
function sets the output voltage of the IR iP1202 Regulator through the FBX feedback pins. Accuracy is
improved even under full load, essentially acting as a “SENSE” pin. The sequence function is applied
through the iP1202 SSX soft start pins.
Figure 13 – Ch1 is set to 2.5V and Ch2 is set to
1.5V on the ip1202 board. Ch1 is set to sequence
on first followed by Ch2 after 50ms. Then Ch1 is
margined high while Ch2 is margined low. Ch2 is
then sequenced off followed by Ch1 after 50ms.
Figure 14 – This is the same sequencing-on
function but with a shorter delay between
channels, the HEALTHY and RESET flags are also
shown.
APPLICATIONS INFORMATION (CONTINUED)
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